NAME: _______________________________________ PERIOD: ___________ Electron Configuration Worksheet 1. What scientist stated that all moving objects exhibit wavelike properties and the wavelength could be determined by using the equation, λ = h/mv. a. What does each letter/symbol indicate in the equation? i. λ ii. h iii. m iv. v b. Using his equation, determine the wavelength of a baseball with a mass of 0.16 kg moving at a speed of 37 m/s? c. Using his equation, determine the wavelength of an electron with a mass of 9.1 x 10-31 kg moving at a speed of 2.4 x106 m/s. d. Can you see the “wave behavior” of the baseball? Why or why not? e. Which moving object’s λ is closer to the radius of an atom? (the radii of an atom ranges from 1 × 10-10 m to 5 × 10-10 m) 2. What scientist said an electron “behaved like a wave” and an equation could indicate the waves most probable location around a nucleus of an atom by combining what two laws? 3. What scientist stated that it was impossible to determine both location and momentum (“aka-velocity”) of an electron at the same time? (Hint: This is called his uncertainty principle.) For extra credit attach a written explanation of this principle using the medicine ball analogy. a. For a chemistry student, which of the two is the most important and why? (Look at your notes and the statement I had you write out above the quantum hotel!)? 4. Using the analogy you learned in class complete the chart below Quantum Hotel Quantum Theory floor sublevel orbital people 5. Using “the rules” for writing an electron configuration and/or orbital diagrams, complete the statements by filling in the blank with two words, one from the “hotel” analogy (i) and the “proper” one from the quantum theory (ii). a. Fill the cheapest ……………………… first. i. ii. b. If two……………………… are in the same bed/orbital then they must lay opposite of each other or have opposite spins. i. ii. c. All ……………………… must have one person/electron before “pairing up” in a sublevel or room i. ii. d. Two people/electrons per ……………………….. max i. ii. 6. What is the name of the rule and/or scientist associated with the statements in question #5a-c? a. b. c. 7. Indicate on the periodic table below the following. (Crash Course #4 and #5) For d-j you may use colored pencils, just make a legend. a. b. c. d. e. f. g. h. i. j. k. l. period numbers #1-7 (aka the floor or ____________________________) group #’s 1-18 the s, p d, and f block (aka the room or ____________________________) the noble gas family (aka-inert gases) halogen family chalcogens pnictogens alkali metals alkali earth metals transition metals inner transition metals (lanthanide and actinide series) metal/nonmetal dividing line (metals. nonmetals, metalloids) 8. Using your answers to questions #4-7 complete the chart below. (Noble gas short cut is okay for both the e- configuration and orbital diagram) Symbol (Element) e- configuration orbital diagram C6 F9 Na11 Al13 Cr24 Se34 Rb37 Ag47 Sb51 Ba56 U92 9. Draw the shape and/or shapes of the following atomic orbitals and give each shape a name. a. s b. p c. d # of valence electrons # of kernel electrons Lewis e- dot diagram 10. Complete the following chart about quantum numbers. Quantum Number Name Symbol Possible Numeric Values 11. In the chart you completed in question #8 circle “an arrow” with the quantum numbers indicate for that particular element. a. Carbon = 2, 0, 0, - ½ b. Fluorine = 2, 1, -1, +½ c. Silver = 4, 2, 0, +½ d. Antimony = 5, 0, 0, +½ e. Uranium = 5, 3, -1, +½ 12. Explain why an electron in a chromium atom can NOT have the following set of quantum numbers, 2, 2, -1, +½ 13. The following elements “violate” the rules you have learned so far when they react (aka bond) with other elements. These elements are listed below, what is the “other” electron configuration and what “rule” is being modified and why (hint a “new rule”) a. carbon b. silicon c. chromium d. silver e. copper 14. Answer the following questions about iron. a. What is the electron configuration and orbital diagram by short-cut method for elemental iron (aka an iron atom)? b. When iron oxides (aka-iron rusts) are formed the iron has to common oxidation states, +2 and +3 i. What will be the oxidation state of an oxide ion, an oxygen atom that becomes a ion (also called an anion)? HINT: Complete the following statement by Mr. Morrow “all elements want to look like a ______________ ____________ in terms of their e- configuration! ii. What electrons are lost (give the floor and room) when iron gives its electrons to an oxygen atom to become +2 in charge? iii. From what room is the additional electron lost when iron becomes +3 in charge? iv. What are the two possible formulas and names of the iron oxides formed? 15. Answer the following question about the element livermorium with an atomic number of 116. a. This element did have the symbol Uuh (ununhexium) and now has the symbol Lv (livermorium); this name was granted by what governing body of chemistry on May 31, 2012. (HINT: You may use the acronym and yes you did learn this when we talked about writing symbols) b. This element, liverrnorium-293, was made by colliding calcium-48 isotopes with a curium-248 isotopes at the Lawrence Livermore National Laboratory. i. What else was made during this collision and how many? To find this answer write a nuclear equation. ii. Thirty-five atoms where made with a half-life 60 ms. APPROXIMATELY how much time passed before only one single isotope of livermorium-293 remained? c. What period number, group number and what chemical family does this man made element belong? d. What would be the expected noble gas electron configuration of this man made element?